Welcome to ECE Board Exam Practice Quiz for Industrial Electronics. This set of practice quiz 4 will test your competence on the theories, concepts and problem solving involving Industrial Electronics. The objectives and goals of this quiz is to help engineering students familiarize concepts and theories as well as develop problem solving skills when answering questions related to the Industrial Electronics.
Industrial Electronics Test Bank
In this section are compiled practice quiz for Industrial Electronics that could be able to enhance your knowledge and skills in your preparation for the ECE Board Exam. The goal is to add thousands of questions for you to be familiarized and hopefully help you to be prepared. I am looking forward that this practice quiz will give you an additional confidence in taking your upcoming Engineering Board Exam.
Guidelines:
- Read and understand each question before choosing the best answer.
- The correct answer will be reveal after you have chosen your answer for every questions
- There is no time limit, answer the questions at your own pace.
- Once all questions are answered, you will be shown your rating.
- You have to get 70% of the total items to pass the quiz.
- You can re-take the quiz as many times as you want or until you are satisfied of your rating.
- Comment us your thoughts, scores, ratings, and questions about the quiz in the comments section below!
Choose the letter of the best answer in each questions.
PREVIOUS: Industrial Electronics Practice Quiz 03
When SCR starts conducting, then _______ losses all control.
gate
anode
cathode
anode supply
Correct!
Wrong!
When the SCR is OFF, the current in the circuit is
exactly zero
large leakage current
small leakage current
thermal current
Correct!
Wrong!
What is that voltage above when the SCR enters the conduction region?
Reverse breakover voltage
Forward breakover voltage
Holding voltage
Trigger voltage
Correct!
Wrong!
The triac is fundamentally a/an _______ with a gate terminal for controlling the turn-on conditions of the bilateral device in either direction.
SCR
Quadric
Shockley diode
Diac
Correct!
Wrong!
What is the typical turn-on time of an SCR?
1 μs
5 μs
10 μs
3 μs
Correct!
Wrong!
The gate of an SCR is ________ with respect to its cathode.
positive
at zero potential
negative
at infinite potential
Correct!
Wrong!
What is a solid state equivalent of a gas filled triode?
Triac
Thyristor
SCR
SCS
Correct!
Wrong!
Which device exhibits negative resistance region?
Diac
Triac
Transistor
UJT
Correct!
Wrong!
When an SCR is combined to a switch, it is considered as a _______ switch.
bidirectional
mechanical
unidirectional
omnidirectional
Correct!
Wrong!
SCR is a rectifier constructed of silicon material. Silicon is chosen because
it is the most abundant material
of its strength and ruggedness
it is much cheaper than any other material
of its high temperature and power capabilities
Correct!
Wrong!
What is the most widely used altitude and altitude-rate transducers?
Flowmeter
Psychometer
Gyro
Gygrometer
Correct!
Wrong!
The typical turn-off time of an SCR is about
20 to 40 μs
5 to 40 μs
1 to 5 μs
15 to 25 μs
Correct!
Wrong!
Which of the following can change the angle of conduction in SCR?
Changing anode voltage
Changing gate voltage
Reverse biasing the gate
Changing cathode voltage
Correct!
Wrong!
Which is equivalent to a zener or avalanche region of the fundamental two-layer semiconductor diode?
Reverse breakdown voltage
Forward breakdown voltage
Breakdown voltage
Breakover voltage
Correct!
Wrong!
What region lies between the peak point and valley point of UJT emitter characteristic?
Saturation
Cut off
Negative resistance
Positive resistance
Correct!
Wrong!
An SCR whose state is controlled by the light falling upon a silicon semiconductor layer of the device.
SCS
GTO
Thyristor
LASCR
Correct!
Wrong!
How many pn junction does SCRs have?
Two
Four
Three
Five
Correct!
Wrong!
What device measures humidity directly with a single sensing element?
Hygrometer
Tachometer
Venturi meter
Hydrometer
Correct!
Wrong!
What is the ratio of two exponential functions of time called?
Transfer function
Damping ratio
Efficiency
Gain
Correct!
Wrong!
What is an automatic speed control device using the centrifugal force on rotating flyweights as the feedback element?
Regulator
Flywheel governor
Field control
Throttle valve
Correct!
Wrong!
What are some areas where GTO is applicable?
Counters
Pulse generators
Multivibrators
All of these
Correct!
Wrong!
The voltage across an SCR when it is turned on is about
0.5 V
0.1 V
1 V
5 V
Correct!
Wrong!
The step response of a first order systems is given by
y(t) = A0
y(t) = A0 + A1es1t + A2es2t +A3es3t
y(t) = A0 + A1es1t + A2es2t
y(t) = A0 + A1es1t
Correct!
Wrong!
ECG stands for electrocardiography while EEG stands for?
electroextracellugraphy
electroemyography
electroencephalography
electrovectorcardiography
Correct!
Wrong!
A control system in which the output is related to the input by device parameters only.
Open-loop control system
Closed-loop control system
Servomechanism
Feedback control system
Correct!
Wrong!
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Industrial Electronics – Quiz 04
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